Phenomenology of static-light mesons from unquenched lattice QCD calculations

We present results for the static-light meson from unquenched lattice QCD. The unquenched gauge configurations were generated using the non-perturbatively improved clover action. At the fixed lattice spacing of 0.1 fm the lightest sea quark mass used is a third of the strange quark mass. A comparison is made between heavy-light chiral perturbation theory and the f static B B decay constant. The mass of the bottom quark is also reported: m b ¯ ( m b ¯ ) = 4.25 ( 2 ) ( 11 ) GeV , where the first error is statistical and the last error is the systematic uncertainty.